Solar Testing Solutions by Application

High-Voltage Measurement & Safety

Modern solar arrays operate at voltages that exceed the capabilities of standard electrical test equipment. With 1500V systems becoming the industry standard for commercial installations, technicians need instruments specifically rated for these extreme DC voltages to safely commission systems and troubleshoot string-level issues.

UT219PV Professional AC/DC Clamp Meter
Rated for CAT III 1500V and capable of measuring up to 2500V DC, this clamp meter is purpose-built for high-voltage PV environments. The ultra-thin 35mm jaw navigates tight wire bundles in combiner boxes, while True RMS ensures accuracy on inverter outputs. Features include audible and visual polarity alarms (critical for DC safety), DC power measurement to 2500kVA, optional flexible clamp for confined spaces, and IP65 outdoor protection. Use it for string current verification, combiner box diagnostics, inverter commissioning, and energy storage system testing—all while maintaining the safety margins required by NEC Article 690.

UT196 1700V DC Solar Multimeter
When string voltages can legitimately exceed 1000V, standard CAT III meters aren't enough. The UT196's CAT III 1700V rating provides the safety margin required for modern solar arrays, allowing technicians to measure string voltages, verify polarity, and troubleshoot without shutting down entire systems. Essential for meeting IEC 62446 commissioning requirements and maintaining safe working practices on energized 1500V systems.

Insulation Testing & System Safety

Insulation resistance testing is mandatory for PV system commissioning and maintenance per IEC 62446-1, but traditional methods require nighttime testing or short-circuiting panels—both costly and inconvenient. Ground faults and insulation failures pose serious safety and fire risks, making regular testing non-negotiable.

UT503PV PV Insulation Tester
This revolutionary tester measures insulation resistance on energized PV systems up to DC 1000V during full daylight operation—eliminating the need for nighttime testing or system shutdowns. Performs both energized PV insulation testing and conventional insulation testing at 125V/250V/500V/1000V, with automatic AC/DC voltage recognition. Features auto-discharge for safety, high-voltage alarms, stepping voltage capability, and Bluetooth data transmission for compliance documentation. IP54 protection (cap closed) and lithium battery power make it field-ready. Meets requirements for IEC 60364-7-712 and helps verify compliance with NEC 690.5 ground fault protection requirements. Also ideal for battery energy storage systems and EV charging infrastructure.

Panel Performance Verification

Standard multimeters only show open-circuit voltage, which remains normal even on degraded panels. Without measuring actual power output under load, technicians can't quantify performance losses or make informed replacement decisions—leading to customer complaints and warranty disputes.

UT673PV Solar MPPT Meter
This specialized meter identifies underperforming panels by measuring the five critical performance parameters: maximum power (5-800W), peak power voltage, peak power current, open circuit voltage, and short circuit current. The large color LCD displays all readings simultaneously for instant comparison against nameplate ratings. Powers itself from the panel being tested—no batteries required. Essential for IEC 62446 commissioning documentation, warranty verification, troubleshooting customer complaints, and making data-driven replacement decisions. Covers modern high-efficiency panels up to 800W with room for future growth.

Rugged Field Instrumentation

Solar work means rooftops, extreme temperatures, weather exposure, and inevitable drops. Standard bench meters fail quickly in these conditions, leaving technicians without their primary diagnostic tool at critical moments.

UT197PV Professional Solar Multimeter
Built for punishment with IP67 dust/water protection, 5-meter drop protection, and operation from -40°C to 55°C. This true RMS meter handles all standard electrical measurements while surviving conditions that destroy lesser instruments. Features external clamp capability for AC/DC power measurement, Bluetooth app support for data logging, and fast 250μs bandwidth for capturing rapid signal changes. Your daily driver for everything from panel testing and inverter diagnostics to electrical panel work—meeting the environmental challenges of field service while maintaining measurement accuracy.

Thermal Diagnostics & Troubleshooting

Visual inspection misses the critical problems: hot cells, failing bypass diodes, loose connections, and junction box issues. By the time these problems are obvious, significant energy losses have already occurred. Thermal imaging provides the evidence needed for warranty claims and helps prevent catastrophic failures.

UTi760X Expert Thermal Imager
Professional-grade 640×512 IR resolution with 1280×1024 super resolution reveals problems invisible to standard inspections. Identify hot cells, junction box failures, bypass diode issues, electrical connection problems, and inverter component stress instantly. The 5" touchscreen and interchangeable lenses (wide-angle to high-temp) adapt to any inspection scenario, from individual panel surveys to large array scans. Temperature range from -20°C to 2200°C covers everything from cold weather startup issues to overheated electrical components. Features include AI voice control, laser rangefinder, multiple focus modes, WiFi connectivity for smartphone image transfer, and PC software for professional reporting. Document issues for IEC 61730 safety compliance, warranty claims, customer communication, and preventive maintenance programs. Also invaluable for building envelope analysis and electrical panel surveys beyond PV applications.

The Complete Solution: These six instruments work together to meet every requirement of professional solar installation and service—from NEC and IEC compliance testing to performance verification and preventive maintenance—providing the safety ratings, measurement capabilities, and durability the industry demands at a price point that makes sense for your business.